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A PPENDIX
B
C
HAPTER
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SUPPORTED FREQUENCY RANGES
Appendix overview
This appendix provides reference information about the frequency ranges in which the
equipment can operate.
MMDS frequency range
MMDS stands for multichannel multipoint distribution service and is a system of transmitting
signals through microwave. MMDS represents frequencies in the 2.5 to 2.686 GHz band.
Although initially used to transmit video signals, MMDS has gone through regulatory changes
which allow licensees of the frequency range to engage in fixed, two-way digital
transmissions. The MMDS frequencies are ideally suited for broadband delivery of data,
voice, and Internet services.
Note that the MMDS band shares it range with the instructional television fixed service
(ITFS) band. ITFS makes up the A, B, C, D and G blocks. Each block contains 4 channels.
Blocks A through D occupy the contiguous space from 2500-2596 MHz and the G block
occupies space from 2644 to 2680 MHz, alternating every other channel with the H block.
BRS & EBS Radio Services
The Broadband Radio Service (BRS), formerly known as the Multipoint Distribution Service
(MDS)/Multichannel Multipoint Distribution Service (MMDS), is a commercial service. In
the past, it was generally used for the transmission of data and video programming to
subscribers using high-powered systems, also known as wireless cable. However, over the
years, the uses have evolved to include digital two-way systems capable of providing high-
speed, high-capacity broadband service, including two-way Internet service via cellularized
communication systems. Such services provide consumers integrated access to voice, high-
speed data, video-on-demand, and interactive delivery services from a wireless device.
The Educational Broadband Service (EBS), formerly known as the Instructional Television
Fixed Service (ITFS), is an educational service that has generally been used for the
transmission of instructional material to accredited educational institutions and non-
educational institutions such as hospitals, nursing homes, training centers, and rehabilitation
centers using high-powered systems. The recent revamping (January, 2005) of the EBS
spectrum will now make it possible for EBS users to continue their instructional services
utilizing low-power broadband systems while also providing students with high-speed
internet access.